<div class="editor">
    <div class="editor-left-sidebar">
        <div id="widget-list">

        </div>
    </div>
    <div class="editor-main">
        <div class="workspace ui-sortable">

        </div>
    </div>
    <div class="editor-right-sidebar">
        <div id="widget-option">

        </div>
    </div>
</div>